The Madrid to Toledo leg of the tour was excellent. We encountered issues with the Barcelona leg as no instructions were given as to how the day tour was to be conducted. Instead of being picked up at the hotel, we found out that we had to go to the offices of Julia Travel directly to start the day tour. No instructions were left at the hotel nor were emailed by Julia Travel or by Viator (Julia maintains that it is Viator's duty - at that point the traveller is left between 2 conflicting parties). Needless to say, we missed the day tour and had to fend for ourselves. It appeared that the Barcelona leg is conducted by Julia Travel (Viator is only the middleman/broker) as a separate item from its Madrid to Toledo leg. The latter leg was more organized.